org.eclipse.scada.da.datasource.base

Class AbstractDataSource

java.lang.Object

org.eclipse.scada.da.datasource.base.AbstractDataSource

All Implemented Interfaces:

DataSource

Direct Known Subclasses:

AbstractDataSourceHandler, AbstractInputDataSource, AbstractMultiSourceDataSource, DataItemSourceImpl, DataStoreDataSource, MemoryDataSource, ProxyDataSource, SumDataSource

public abstract class AbstractDataSource
extends Object
implements DataSource

Basic implementation of a data source.

Author:

Jens Reimann

Field Summary

Fields inherited from interface org.eclipse.scada.da.datasource.DataSource

DATA_SOURCE_ID

Constructor Summary

Constructors

Constructor and Description
AbstractDataSource()

Method Summary

Modifier and Type	Method and Description
void	addListener(DataSourceListener listener)
protected abstract Executor	getExecutor() Return the executor to use for sending out events
void	removeListener(DataSourceListener listener)
protected void	updateData(DataItemValue value)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.eclipse.scada.da.datasource.DataSource

startWriteAttributes, startWriteValue

Constructor Detail

AbstractDataSource

public AbstractDataSource()

Method Detail

getExecutor

protected abstract Executor getExecutor()

Return the executor to use for sending out events

Returns:

the executor to use, must never be null

addListener

public void addListener(DataSourceListener listener)

Specified by:

addListener in interface DataSource

removeListener

public void removeListener(DataSourceListener listener)

Specified by:

removeListener in interface DataSource

updateData

protected void updateData(DataItemValue value)